EexcavaStart CAT 366-8821 221-8874 Excavator ECM Controller for 311D 320D 324D

OEM / reference366-8821 221-8874

SpecificationECM Controllers & Monitors

Catalog ID

ECM Controllers & Monitors reference 366-8821 221-8874. Compare the complete part number, connector layout, mounting points and original unit before ordering; machine serial range can affect fitment.

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Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.

Product fitment guide

Part numbers and compatible models

Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.

Part identification

Reference numbers

366-8821 221-8874
3668821 2218874

Search with or without hyphens. Match the complete number on the original part.

Product summary

ECM Controllers & Monitors

Category: ECM Controllers & Monitors
Catalog ID
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Before ordering

Confirm these details

Match the complete part number on the original component label.
Compare the front layout and visible configuration with the product photos.
Compare connector count, connector shape and keying before installation.
Confirm the exact machine model and serial range before ordering.

Machine fitment

Compatible model references

Manual confirmation required

No machine application is confirmed in this record. Send the machine and engine model for a manual fitment check.

Compatibility lists identify searchable model families, not every production serial range. Confirm the original part number and machine serial number before purchase.

Quick fitment answers

Common questions about 366-8821 221-8874

Which machines use 366-8821 221-8874?

The exact machine application requires manual confirmation. Send the machine model, engine model and a clear photo of the original nameplate.

What part numbers cross-reference with 366-8821 221-8874?

The recorded reference family includes 366-8821 221-8874, 3668821 2218874.

How do I confirm 366-8821 221-8874 before ordering?

Match the complete part number on the original component label. Compare the front layout and visible configuration with the product photos. Compare connector count, connector shape and keying before installation. Send clear photos of the original unit and connector layout when requesting a quote.

Continue comparing recovered references from the same system.

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